WO2009050897A1 - 符号化レート変換装置、符号化レート変換方法および集積回路 - Google Patents

符号化レート変換装置、符号化レート変換方法および集積回路 Download PDF

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Publication number
WO2009050897A1
WO2009050897A1 PCT/JP2008/002943 JP2008002943W WO2009050897A1 WO 2009050897 A1 WO2009050897 A1 WO 2009050897A1 JP 2008002943 W JP2008002943 W JP 2008002943W WO 2009050897 A1 WO2009050897 A1 WO 2009050897A1
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Prior art keywords
value
encoding rate
rate conversion
quantization matrix
encoding
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PCT/JP2008/002943
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English (en)
French (fr)
Inventor
Hiroshi Ikeda
Yoshiyuki Wada
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Panasonic Corporation
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Publication date
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Priority to US12/519,604 priority Critical patent/US20100091842A1/en
Priority to JP2009537928A priority patent/JPWO2009050897A1/ja
Publication of WO2009050897A1 publication Critical patent/WO2009050897A1/ja

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/93—Run-length coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

　符号化データを構成する複数のマクロブロックを、ピクチャの符号化時に使用された第１量子化マトリクスを使用して逆量子化することにより複数の係数データを取得する。第１量子化マトリクスが示す複数の係数のうち、所定周波数より低い周波数に対応する低周波係数の値を変換するための第１変換値と、高周波係数の値を変換するための値であって、かつ、第１変換値より大きい第２変換値とを使用して、第１量子化マトリクスを第２量子化マトリクスに変換する（Ｓ４０８）。第２量子化マトリクスが符号化データの符号化レートを大きくするためのマトリクスである場合、少なくとも１つのマクロブロックに対応する量子化スケールの値をβ１（≧１）倍した変換後スケール値を算出する。複数の係数データの少なくとも一部を、第２量子化マトリクスと、少なくとも一部の係数データに対応するマクロブロックに対応する算出された変換後スケール値とを使用して量子化する。
PCT/JP2008/002943 2007-10-19 2008-10-16 符号化レート変換装置、符号化レート変換方法および集積回路 WO2009050897A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/519,604 US20100091842A1 (en) 2007-10-19 2008-10-16 Coding rate conversion apparatus, coding rate conversion method, and integrated circuit
JP2009537928A JPWO2009050897A1 (ja) 2007-10-19 2008-10-16 符号化レート変換装置、符号化レート変換方法および集積回路

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007272119 2007-10-19
JP2007-272119 2007-10-19

Publications (1)

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WO2009050897A1 true WO2009050897A1 (ja) 2009-04-23

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US (1) US20100091842A1 (ja)
JP (1) JPWO2009050897A1 (ja)
CN (1) CN101578878A (ja)
WO (1) WO2009050897A1 (ja)

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WO2019189346A1 (ja) * 2018-03-30 2019-10-03 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 符号化装置、復号装置、符号化方法及び復号方法
WO2020084929A1 (ja) * 2018-10-23 2020-04-30 日本電気株式会社 映像符号化又は復号装置、映像符号化又は復号方法、プログラム、及び記録媒体

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CN101578878A (zh) 2009-11-11
US20100091842A1 (en) 2010-04-15
JPWO2009050897A1 (ja) 2011-02-24

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